fix: .ico content-type

Author: frankpagan

src/server.js

@@ -22,7 +22,7 @@ const mimeTypes = {
     ".gif": "image/gif",
     ".htm": "text/html",
     ".html": "text/html",
-    ".ico": "image/vnd.microsoft.icon",
+    ".ico": "image/x-icon",
     ".ics": "text/calendar",
     ".jar": "application/java-archive",
     ".jpeg": "image/jpeg",